Various tweaks

source/posts/2017-05-19-dropping-support-for-subgroups-on-mysql.html.md

 ---
-title: "Dropping support for subgroups MySQL "
+title: "Dropping support for subgroups on MySQL"
 author: Mike Bartlett
 author_gitlab: mydigitalself
 author_twitter: mydigitalself
 categories: GitLab
-description: "Subgroups will no longer be available for GitLab instances on MySQL from GitLab 9.2"
+description: "Subgroups will no longer be available for GitLab instances using MySQL from GitLab 9.2"
 ---
 In 9.0 we released an enhancement to group management by [introducing subroups](https://about.gitlab.com/2017/03/22/gitlab-9-0-released/#subgroups-ce-ee).
@@ -14,7 +14,7 @@ GitLab 9.2 and the upgrade process will migrate any subgroups to the root of the
 <!-- more -->
 Whilst investigating some occurrences of inconsistencies with project membership, we [discovered](https://gitlab.com/gitlab-org/gitlab-ce/issues/30472#note_27747600) that
-our approach to implementing subgroups was hindered by functionality that is available in our primary database, PostgreSQL but not in MySQL.
+our approach to implementing subgroups was not efficient. While PostgreSQL provides easy workarounds, MySQL unfortunately did not provide any alternatives that did not require vastly changing the way we store the hierarchy of groups.
 In order to quickly address the issue, we have removed support from subgroups in 9.2.